Unfortunately it shows a very basic misunderstanding of the layout
Not everyone will be familiar with the layout.
they should be by now
(especially when they can come up with 7 passings)
There
were 7 passings after 9.15pm
Jane Tanner passed on her way to check on her children, and then passed again on her way back ( 9.15pm )
Oldfied passed twice , on his way to, and then back after checking on his kids ( 9.30pm )
O'Brien passed on his way to check his children ( he stayed because his child was ill )
Jane Tanner passed again when she went to relieve O'Brien
O'brien passed on his return to thye restaurant
So seven times people passed that open window ... although I accept that unless they were looking at the apartments, across the car park, as they passed they would not have noticed it
Now I realise it, I am astonished that the abductor didn't have a get away car waiting in the very car park he walked around
( just to mention, I have not followed this case devotedly, so there is much that I do not know about it )